0050_Keys - Keys - Chapter 5 of an Introduction to Database Systems Modeling and Administration
Автор: IS & IT
Загружено: 2025-09-09
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This video is entitled "Keys" and it goes with chapter five in the book Introduction to Database Systems Modeling and administration by Dr. James M. Reneau.
This video discussion will define a key and the attributes that make a good key (unique, non-volatile, minimal, secure, and non null). Natural vs. synthetic keys are discussed along with single value and concatenated ones. Several examples are given and notating the primary key is shown on a Logical Data Model (LDM) entity.
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